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Chemistry

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1. Light passing through a transparent medium has a wavelength of 466 nm and a frequency of 6.20
× 1014 s-1. What is the speed of the light in the medium?
A) 2.89 × 108 m/s B) 2.89 × 1017 m/s C) 1.33 × 1012 m/s D) 1.33 × 1021 m/s E) 7.52 × 10-22 m/s
2. What is the frequency associated with radiation of 4.59 × 10-8 cm wavelength?
A) 6.54 × 1017 s-1 B) 6.54 × 1015 s-1 C) 1.53 × 10-8 s-1 D) 13.8 s-1 E) 2.18 × 107 s-1
3. What is the wavelength in nm associated with radiation of frequency 2.8 × 1013 s-1?
A) 840 nm B) 2.8 × 104 nm C) 299 nm D) 9.3 × 104 nm E) 1.1 × 104 nm
4. Choose the INCORRECT statement concerning electromagnetic radiation.
A) Infrared light has a longer wavelength than ultraviolet light.
B) The greater the frequency of the electromagnetic radiation, the greater the energy of the
radiation.
C) A photon with a wavelength of 5000 Angstroms has one-half as much energy as a photon with a
wavelength of 2500 Angstroms.
D) The speed of ultraviolet light rays is faster than X-rays in a vacuum.
E) Electromagnetic radiation is energy transmission in which electric and magnetic fields are
propagated as waves.
5. Determine the energy, in J/photon, of radiation of frequency 5.8 × 1015 s-1.
A) 3.8 × 10-18 J B) 1.7 × 1024 J C) 5.8 × 10-25 J D) 1.7 × 10-16 J E) 5.2 × 10-8 J
6. How many photons of light with frequency 5.50 × 1015 Hz are required to provide 1 kJ of energy?
A) 3.64 × 10-18 photons B) 2.74 × 1020 photons C) 4.56 × 10-4 photons D) 1.65 × 1044 photons
E) 3.64 × 10-16 photons
7. The symbol "n" in quantum numbers refers to:
A) the energy of the electrons. B) the total energy of the atom. C) the number of electrons in an
energy level. D) the energy level in which an electron is found. E) the number of orbits in an atom.
8. When an electron in an atom goes from a high energy state to a low one, what occurs?
A) Another electron goes from a low energy state to a high one. B) The atom moves faster.
C) Energy is given off. D) This process is not possible. E) Energy is absorbed.
9. What is the wavelength of a ball that is 25.0 g traveling at 40.2 m/s?

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A) 6.59 × 10-37 m B) 6.59 × 10-34 m C) 1.07 × 10-30 m D) 4.12 × 10-37 m E) 2.42 × 10-11 m
10. What is the wavelength, in nm, associated with a 2000. kg truck traveling at a speed of 20 m/s,
that is, considering the truck to be a "matter" wave?
A) 1.33 × 10-29 nm B) 2.65 × 10-29 nm C) 6.02 × 10-29 nm D) 7.50 × 103 nm E) 1.66 × 10-29 nm
11. An atomic orbital represents:
A) the shape of an atom
B) the repulsion of all the electrons among themselves
C) a fixed path that an electron follows around the nucleus of an atom
D) the region of electron density for a covalent bond
E) the region of high probability for an electron around the nucleus of an atom
12. Which of the following is not possible?
A) 2p B) 4d C) 5p D) 3f E) 2s
13. The possible values of the angular momentum quantum number of a 3p electron are:
A) +1/2, -1/2 B) -1, 0, +1 C) -1 D) 0 E) 1
14. The possible values of the magnetic quantum number, mℓ , of a 3p electron are:
A) 0, 1, 2 B) 2, 1, 0, -1, -2 C) 0 D) -1, 0, +1 E) +1, -1
15. Give the appropriate values of n and ℓ for the orbital designation 3p.
A) n = 3, ℓ = 0 B) n = 1, ℓ = 3 C) n = 3, ℓ = 3 D) n = 3, ℓ = 1 E) n = 3, ℓ = 2
16. What is the smallest acceptable value for the missing quantum number?
n = ?, ℓ = 2, mℓ = 0, ms = +1/2
A) 3 B) 2 C) 4 D) 5 E) 1
17. What is the orbital designation for the quantum numbers n = 2, ℓ = 1?
A) 3s B) 2s C) 2d D) 2p E) 3p
18. All of the terms below are quantum numbers EXCEPT:
A) principal B) magnetic C) spin D) valence E) orbital angular momentum
19. Which of the following statements concerning quantum numbers is NOT correct?

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1. Light passing through a transparent medium has a wavelength of 466 nm and a frequency of 6.20 × 1014 s-1. What is the speed of the light in the medium? A) 2.89 × 108 m/s B) 2.89 × 1017 m/s C) 1.33 × 1012 m/s D) 1.33 × 1021 m/s E) 7.52 × 10-22 m/s 2. What is the frequency associated with radiation of 4.59 × 10-8 cm wavelength? A) 6.54 × 1017 s-1 B) 6.54 × 1015 s-1 C) 1.53 × 10-8 s-1 D) 13.8 s-1 E) 2.18 × 107 s-1 3. What is the wavelength in nm associated with radiation of frequency 2.8 × 1013 s-1? A) 840 nm B) 2.8 × 104 nm C) 299 nm D) 9.3 × 104 nm E) 1.1 × 104 nm 4. Choose the INCORRECT statement concerning electromagnetic radiation. A) Infrared light has a longer wavelength than ultraviolet light. B) The greater the frequency of the electromagnetic radiation, the greater the energy of the radiation. C) A photon with a wavelength of 5000 Angstroms has one-half as much energy as a photon with a wavelength of 2500 Angstroms. D) The speed of ultraviolet light rays is faster than X-rays in a vacuum. E) Electromagnetic radiation is energy transmission in which electric and magnetic fields are propagated as waves. 5. Determine the energy, in J/photon, of radiation of frequency 5.8 × 1015 s-1. A) 3.8 × 10-18 J B) 1.7 × 1024 J C) 5.8 × 10-25 J D) 1.7 × 10-16 J E) 5.2 × 10-8 J 6. How many photons of light with frequency 5.50 × 1015 Hz are required to provide 1 kJ of energy? A) 3.64 × 10-18 photons B) 2.74 × 1020 photons C) 4.56 × 10-4 photons D) 1.65 × 104 ...
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